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2002 chevy trailblazer_lt
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Device wiring expected to be there includes, O2B1S1 sensor (4 wire), Oil pressure switch (2 wire), cam position sensor (3 wire), vvt solenoid (2 wire).
 

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Discussion Starter · #5 ·
Thanks TJ that narrows it down. The O2B1S1 sensor has all the wires and the cam position sensor has all its wires so that leaves the Oil pressure switch or the vvt solenoid.
 
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